Burner for gas-stoves.



PATBNTED JULY 26, 1904.

J. JOHNSON.

BURNER FOR GAS STOVBS.

APPLICATION FILED SEPT. 25, 1902.

2 SHEETS-SHEET l.

N0 MODEL.

PATENTED JULY 26, 1904.

J. JOHNSON.

BURNER FOR GAS STOVES.

APPLICATION FILED SEPT. 25, 1902.

2 SHEETS-SHEET 2.

N0 MODEL.

UNTTEO STATES Patented July 26, 1904.

JONATHAN JOHNSON, OF LOVELL, MASSACHUSETTS.

BURNER FOR GAS-STOVES.

SPECIFICATION forming part of Letters Patent No. 766,147, dated July 26,1904,

Application filed September 25, 1902` Serial No. 124,829. iNo modeln T0all whom if vnr/.y concern.-

Be it known that I, JONATHAN JOHNSON, a citizen of the UnitedStates,residing at Lowell, in the county of Middlesex and State ofMassachusetts, have invented a new and useful Burner for (iras-Stoves,of which the following is a specification.

This invention relates to burners for g'asstoves; and it has for itsobject to produce a burner which shall be simple and inexpensive and toprovide in connection with the same a water coil or heater, as will behereinafter fully described, and particularly pointed out in the claims.

In the accompanying' drawings, Figure l is a plan view of my improvedgas-stove burner, showing' the water-coil in position thereon. Fig. 2 isa vertical sectional view of the burner with the water-coil in positionand showing' in dotted lines a shield extending over the same. Fig. 3 isa perspective view showing' the shield detached. Fig. 4 is an invertedplan view illustrating' a modification. Fig'. 5 is a transversesectional view of the same. Fig'. 6 is a perspective view illustrating'a modified construction of the waterheater. Figs. 7 and 8 areperspective detail views illustrating' modifications. Fig. 9 is aninverted plan view showing' another modification.

Corresponding' parts in the several figures are indicated by similarnumerals of reference.

In carrying' out my invention l prefer to avail myself of the ordinarycircular gaschamber shown at l and which consists of an annular hollowcasting having a gas-inlet 2 formed in the outer side thereof and agaseXit 3 formed in its inner side wall. This g'aschamber, while formingthe base and support of what is known in its entirety as the bui-ner,7is actually nothing more than a chamber in which the gas may bepermitted to expand and from which it is supplied to the parts which areproperly known as the burners.

In the preferred form of my invention I connect with the gas-chamber lan exit-pipe 4:, suitably curved and rising` centrally in the interioropen space of the gas-chamber. W' ith this pipe is connected anauxiliary gas-chamber 5, in which further, expansion of the gas may takeplace and with which the burners which radiate from said auxiliarygas-chamber are in turn connected. T he auxiliary gaschamber is bypreference composed of two independent sections 6 and 7, screwed orotherwise connected together. The upper Chaniber may have an integralclosure at the top, or it may be topped with a detachable cap 8, whichwhen desired may be transferred to the lower section 7 when said uppersection 6 is detached.

The two burner-sections 6 and 'T are provided, as already stated, withradiating burners, and these are of different construction, as will beclearly seen in Fig. 2 of the drawings. The burners 9, radiating' fromthe upper section 6, are the ordinary iish-tail burners, while thoseradiating from the lower section and which are designated 10 are of theT type, being' composed of a head or cross-bar l1, which in thisinstance is preferably curved upwardly at its outer end, and a stem 12,serving' as an air-inlet. lt will be seen that oxygen being' thuslargely supplied to the lower burners a blue llame will result, while awhite iianie will be emitted from the upper burners. An air-draft in anupward direction being' constantly supplied through the annular spaceofthe main gas-chamber, an entire combustion will be the result, and anintense heat will be developed by the combination of the two sets ofburners. For the better mixture of the llames I prefer that the upperand lower burners should be arranged in such a manner to alternate witheach other, as will be plainly seen in Fig. l of the drawing's.

l5 designates a water-coil, consisting of a spirally-coiled pipe-sectionthe ends of which are extended to form an inlet i6 and an outlet 1T.This coil is made coniform, as clearly shown in Figs. 1 and 2 of thedrawings, the uppermost coil having' the smallest diameter, thuscausing' what may be termed the `airshaft to be of decreasing' diameterin an upward direction, and thereby concentrating' the heat in thedirection of the central opening 18 of the shield 19, which is supportedupon the gas-chamber above and surrounding' the said IOO coil and whichis provided with slots 20 for the passage of the pipe ends 16 and 17.

The shield 19 may be omitted when desired; but it should be observedthat the coils of the water-coil must be made to abut closely againsteach other, the object being to form what may be termed an air-shaft,through which air admitted at the lower part of the burner will rise andassist in the entire combustion of the flames issuing from the fish-tailor white-flame burners. If the coils of the water-coil do not closelyengage each other, the shield 19 will be a necessity in order to excludeatmospheric air at this point.

By the construction thus far described I produce a burner by means ofwhich heat of, great intensity may be developed, and this heat isutilized not only for the purpose of heating the material contained insuch vessels as may be placed upon the shield or support 19, but thewater-coil also receives the direct impact of the liames, which arethereby utilized to heat a water-supply passing through said coil, theends of which may be connected in the usual well-known manner with aboiler or tank of ordinary construction.

The white-flame burners, it will be observed, are disposed above theblue-flame or Bunsen burners, and the reason for using them, it may bestated, is that I have found them to be more economical in use than theblue-flame burners alone. The fact is that an ample up- Ward current ofair is admitted between the inner and outer gas-chambers, which will besufficient to insure practically complete combustion, the air beingheated by contact with the blue flames before it impinges upon the whiteflames issuing from the White-flame burners, thus insuring completecombustion of the gas issuing from said white-flame burners. I have inpractice found this to be an eflcient and useful arrangement.

Sometimes it may be desired to dispense with one of the series ofburners, and this may be easily accomplished in the following manner:When it is desired to use the lower or T burners only, the upper sectionof the auxiliary gas-chamber is disconnected and the top closure 8 ofthe upper section may be transferred to the lower section, or a similarclosure may be kept in readiness for such purpose. This arrangement hasbeen illustrated in Fig. 7 of the drawings. Similarly when it shall bedesired to use the sh-tail burners only the entire auxiliary gas-chamberis unscrewed from the pipe connection, with which it is preferablyconnected by means of a reducing-plate 22. rIhe upper and lower toconnect the two types of burners directly with the main gas-chamber,whichis then bored for the direct reception of said burners. These arethen connected with said gas-chamber in alternate series, the {ish-tailburners alternating with the T-burners, the flames of the severalburners being thus projected in an inward direction. My preference inthis case is to connect the T-burners with the bottom wall of thegas-chamber, this necessitating no change beyond the necessary curvingof the connecting ends of the said burners in an upward direction. Theair-inlet pipes, as before, extend downwardly from the heads orcross-bars of said burners.

Fig. 6 illustrates simply a modified construction of the water-heater,which in this instance consists simply of an annular chamber 23, adaptedto be supported upon the gaschamber and provided with means for theattachment of the inlet and exit pipes, as shown at 24 25.

Fig. 9 shows a modification whereby the i fish-tail burners illustratedin Fig. 4c are dispensed with and the T-burners are adjustedtangentially with relation to the gas-chamber 1.

From the foregoing description, taken in connection with thedrawingshereto annexed, the operation and advantages of my invention will bereadily understood.

In the several forms of my invention the space confined within theannular gas-chamber 1 or between the latter and the auxiliarygas-chamber 5 constitutes a combustion-chamber, within which the whiteand blue flames projected, respectively, by the burners 9 and 10 mingletogether, the combustion thus talring place evolving an intense degreeof heat. As hereinbefore set forth,the blue-flame burners are disposedbelow the white-flame burners, so that the air rushing in through thecombustion-chamber and the air-shaft shall become intensely heated priorto its mingling with the white flames, and perfect combustion is thuspermitted at an expense for gas which has in practice been foundextremely triiiing as compared with other gas-consuming apparatus.

I desire it to be understood that while I have shown and'described thepreferred form or forms of my invention I do not limit myself as regardsthe structural details of the same, but reserve the right to anychanges, alterations, or modifications which may be resorted to withoutdetracting from the utility or departing from the spirit and scope ofthe invention.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States- 1. A burner for gas-stovescomprising an annular gas-chamber and two sets of burners, respectivelyof the white and blue flame types connected therewith and disposed toproject IOO IZO

their flames into the combustion-space surrounded by said annularchamber, said blueflame burners being disposed below said whitelameburners.

2. A burner for gas-stoves comprising an annular gas-chamber surroundinga conibustion-space, and a plurality of burners,respec tively ot' thewhite and blue flame types connected with said gas-chamber in alternateseries and projecting their flames into the combustion-space surroundedthereby, said bluellame burners being disposed below said whitetlarneburners.

3. A burner for gas-stoves comprising an annular gas-chamber surroundinga combustion-space, an auxiliary gas-chamber supported within thelatter, and two sets of burners, respectively of the white and blue arnetypes, disposed to project their llames into the cornbustion-spacesurrounded by the outer, annular gas-chamber, said blue-flame burnersbeing disposed below said white-flame burners.

et. A burner for gas-stoves comprising an annular gas-chamber inclosinga combustionspace, two sets of burners, respectively of the white andblue Haine types, connected therewith and projecting their llames intothe cornbustion-space, said blue-flame burners being disposed below saidwhite-Ham@ burners and a water-coil constituting a shaft for tho upwardpassage of air through the combustionspace, said water-coil being'supported upon the gas-chamber.

5. A burner for gas-stoves comprising an annular gas-chamber surroundinga combustion space, an expansion gas chamber connected with the annulargas-chamber and supported centrally therein, two sets of burners,respectively of the white and blue flame types connected with theexpansion gas-chamber and projecting their flames into thecombustion-space, said blue-flame burners being disposed below saidwhite-tlame burners, and a suitably-supported water-coil extending'above the burner and constituting ashaft for the upward passage of air.

In testimony that I claim the foregoing as JONATHAN JOHNSON.

Vitnesses ALICE GILMAN, EDWARD FISHER.

